Table 1

Correlations between the severity of the three core features of the attention deficit/hyperactivity disorder and the severity of symptoms or characteristics of eating disorders (N=32)
r(p)
Eating disorder symptom/characteristic na M(SD) Md ADHD-SR: attention deficit scale ADHD-SR: hyperactivity scale ADHD-SR: impulsivity scale BIS-11: sum score
Age (years)b 32 23.1 (5.6) −0.152 (0.406) −0.230 (0.205) −0.035 (0.847) −0.118 (0.519)
Age at onset (years)b 32 17.1 (4.0) −0.011 (0.952) −0.004 (0.984) 0.133 (0.467) 0.312 (0.082)
Current BMI (kg/m2)b 32 17.1 (3.8) 0.119 (0.515) −0.185 (0.311) 0.107 (0.561) 0.395 (0.025)
Lowest BMI (kg/m2)b 32 14.8 (3.0) 0.109 (0.551) −0.170 (0.353) 0.079 (0.667) 0.531 (0.002)
Highest BMI (kg/m2)b 32 22.2 (3.7) 0.248 (0.171) −0.075 (0.684) 0.265 (0.143) 0.352 (0.048)
Weight phobiac 32 2.0 0.202 (0.267) 0.168 (0.357) 0.323 (0.071) 0.302 (0.093)
Dependence of self-esteem on body shapec 32 2.0 0.367 (0.039) 0.070 (0.705) 0.279 (0.122) 0.062 (0.738)
Body-image disturbancesc 32 3.0 0.344 (0.054) 0.332 (0.063) 0.064 (0.728) 0.370 (0.037)
Denial of seriousness of low body weightc 23 2.0 0.393 (0.063) 0.209 (0.339) 0.052 (0.813) 0.081 (0.712)
Periods (last 3 months)c 29 2.0 −0.028 (0.885) −0.065 (0.739) −0.160 (0.406) −0.435 (0.018)
Severity of binge eating episodesc 32 2.0 −0.050 (0.787) −0.249 (0.169) 0.171 (0.350) 0.218 (0.231)
Sense of lack of controlc 18 2.0 0.137 (0.588) 0.300 (0.227) 0.512 (0.030) 0.430 (0.075)
Self-induced vomitingc 32 1.0 −0.159 (0.385) −0.203 (0.265) 0.232 (0.202) 0.252 (0.163)
Laxative abusec 32 0.0 0.269 (0.136) 0.107 (0.558) 0.143 (0.434) 0.504 (0.003)
Diureticsc 32 0.0 --- d --- d --- d --- d
Appetite suppressantsc 32 0.0 --- d --- d --- d --- d
Medication to increase thyroid metabolismc 32 0.0 --- d --- d --- d --- d
Neglect of insulin treatmentc 32 0.0 --- d --- d --- d --- d
Excessive fastingc 32 0.0 0.177 (0.334) 0.176 (0.335) −0.093 (0.614) 0.415 (0.018)
Excessive exercisec 32 1.0 0.119 (0.518) 0.137 (0.455) 0.003 (0.988) 0.220 (0.225)
Enemasc 32 0.0 --- d --- d --- d --- d
Use of vomitivesc 32 0.0 --- d --- d --- d --- d
Frequency of binge eating episodesc 32 1.0 −0.037 (0.839) −0.184 (0.314) 0.220 (0.225) 0.213 (0.243)
Frequency of inappropriate compensatory behaviorsc 32 1.0 −0.020 (0.914) −0.168 (0.357) 0.108 (0.556) 0.214 (0.240)
Dieting or fastingc 32 2.0 0.394 (0.026) 0.329 (0.066) 0.312 (0.082) 0.226 (0.214)
Avoidance of fattening foodc 32 2.0 0.244 (0.177) 0.301 (0.094) 0.583 (0.000) 0.390 (0.028)
Limits for caloric intakec 32 0.5 0.273 (0.131) 0.377 (0.034) 0.439 (0.012) 0.259 (0.152)
Preoccupation with body slimnessc 32 2.5 0.447 (0.010) 0.271 (0.134) 0.311 (0.083) 0.411 (0.020)
M (SD) 7.3 (4.3) 6.3 (3.2) 3.0 (3.1) 62.7 (10.3)

BMI=Body Mass Index, ADHD-SR=Attention Deficit Hyperactivity Disorder–Self-Report, BIS-11=Barratt Impulsiveness Scale, Version 11.

Bonferroni corrected alpha=0.05/88=0.00057. Values in boldface are significant correlations when applying Bonferroni correction.

aSome items were not applicable for all patients in the sample. For example, the item “Denial of seriousness of low body weight” was not applicable for 9 patients who were not underweight.

bPearson’s product–moment correlation.

cSpearman’s rank correlation. The items of the Structured Interview for Anorexia and Bulimia Nervosa–Expert Rating (SIAB–EX) were rated on a rank-ordered scale ranging from 0=no to 4=very severe/strong/frequent.

dSymptom or characteristic was reported by none or only one patient. No correlations were calculated.

Stulz et al.

Stulz et al. BMC Psychiatry 2013 13:44   doi:10.1186/1471-244X-13-44

Open Data